Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

The concept of will is unnecessary in explaining behavior.

世界是一座伟大的山，我们是其中的攀登者。

对思考者来说，世界是喜剧；对感受者来说，世界是悲剧。

Technological innovation is the fundamental way to solve the problems of the coal industry.

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

Filmmaking is a collaborative art, but the director must be the guiding force.